| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 15 | |
| #2 | Switzerland | 11 | |
| #3 | Austria | 1 | |
| #4 | Spain | 1 | |
| #5 | France | 1 | |
| #6 | United Kingdom | 1 |
| # | Industry | |
|---|---|---|
| #1 | Machine tools | |
| #2 | Mechanical elements | |
| #3 | Engines, pumps and turbines |
| # | Technology | |
|---|---|---|
| #1 | Grinding or polishing devices | |
| #2 | Metal wire processing | |
| #3 | Clutches and brakes | |
| #4 | Servomotors | |
| #5 | Sawing | |
| #6 | Siphons |
| # | Name | Total Patents |
|---|---|---|
| #1 | Hack Karl | 17 |
| #2 | Karl Hack | 9 |
| #3 | Herbert Speidel | 2 |
| #4 | Wolfgang Goelz | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB1272503A | Apparatus for the bending of wire | |
| ES163163A1 | Procedure to transform the heat in kinetic and voltage energy |